cpukit/posix: Move SPDX line to top of file

The RTEMS Software Engineering Guide specifies that the SPDX license
annotation shouldbe the first line of the file and not part of the
copyright/license comment block.

cpukit/posix/src/key.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /**
  * @file
  *
@@ -7,8 +9,6 @@
  */
 
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright (C) 2018 embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/keyzerokvp.c

@@ -1,6 +1,6 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright (C) 2018 embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/mqueue.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /**
  * @file
  *
@@ -7,8 +9,6 @@
  */
 
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright (C) 2018 embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/mqueueconfig.c

@@ -1,6 +1,6 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright 2018, embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/psignalconfig.c

@@ -1,6 +1,6 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright (C) 2018, 2019 embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/psxsemaphore.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /**
  * @file
  *
@@ -7,8 +9,6 @@
  */
 
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright (C) 2018 embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/psxsemaphoreconfig.c

@@ -1,6 +1,6 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright 2018, embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/psxtimerconfig.c

@@ -1,6 +1,6 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright 2018, embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/pthreadconfig.c

@@ -1,6 +1,6 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright 2018, embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/ptimer.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /**
  * @file
  *
@@ -7,8 +9,6 @@
  */
 
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright (C) 2018 embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/shm.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /**
  * @file
  *
@@ -7,8 +9,6 @@
  */
 
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright (C) 2018 embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/shmconfig.c

@@ -1,6 +1,6 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright 2018, embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without

cpukit/posix/src/shmops.c

@@ -1,6 +1,6 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
 /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
  * Copyright (c) 2018, embedded brains GmbH & Co. KG
  *
  * Redistribution and use in source and binary forms, with or without